In this June 20, 2011 photo, NASA astronaut Sandy Magnus, STS-135 mission specialist, flies in a T-38 trainer on her way from Houston to the Kennedy Space Center in Florida for the final Terminal ... more

In this June 20, 2011 photo, NASA astronaut Sandy Magnus, STS-135 mission specialist, flies in a T-38 trainer on her way from Houston to the Kennedy Space Center in Florida for the final Terminal Countdown Demonstration Test (TCDT). Magnus and the rest of the space shuttle Atlantis crew are preparing for Atlantis' scheduled liftoff on July 8. (AP Photo/Houston Chronicle, Smiley N. Pool) MANDATORY CREDIT less